One who, despite not having any other klepto tendencies, will habitually pocket other people's cigarette lighters. Typically this unconscious act of thievery happens after a weed session. The number one reason a BIC lighter will often pass through 20 other owners before it's spent.

<Potential smoker fumbles through pockets, loaded bowl of ganja waiting on the table>

Where is that lighter!?

Oh yeah, Trey was smoking here earlier. That dude is a lighter klepto.

Better keep an eye out next time. Now I gotta walk to the fucking store in the rain.